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I'm not at all an expert in this, but my limited understanding is that electrons are only "singularities" in classical EM; in quantum field theory they're just
by Analemma_ 2y ago
I'm not at all an expert in this, but my limited understanding is that electrons are only "singularities" in classical EM; in quantum field theory they're just solitons of the underlying quantum field and can be analyzed with no infinities present. We haven't found a QFT equivalent for gravity yet, but I think the broad consensus is that the gravitational singularities will disappear once we do.
- ajkjk 2y agoAfaik even in qft they are effectively singularities, but I'm not an expert in that yet. It's not that they are infinities, it's that they're point discontinuities in the A field.
- Jensson 2y agoIn qft there are no singularities, everything are fields. Particles are just such fields, a singularity in qft would mean you have a Dirac delta shaped field, I don't think such a field exists in reality and I don't think many working physicists would believe in them either. The big reason they can't even come up with math for the black hole singularities is just because the theory doesn't support working with such Dirac shaped fields. Edit: When they say electrons doesn't have a size, what they mean is that there is no limit to how small you can make an electron, not that it is always compressed into a point.